Yu Konishi discovers the thrill of public exposure and starts shamelessly tempting men around town. She masturbates outdoors where anyone could catch her, barges into the men's bath at a hot spring for sex, and has a threesome at a construction site where someone might appear at any moment. She even seduces a fisherman by the river and sucks his cock as eagerly as a fish biting the bait. Her increasingly daring exhibitionism under the open sky cannot be stopped.